<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import * as echarts from 'echarts'
import resize from './mixins/resize'

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '350px'
    },
    autoResize: {
      type: Boolean,
      default: true
    },
    chartData: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      chart: null
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val)
      }
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.$nextTick(() => {
        this.chart = echarts.init(this.$el, 'macarons')
        this.setOptions(this.chartData)
      })
    },
    setOptions({ title, xAxisDatas, totalAmountDatas, totalNumDatas } = {}) {
      if (this.chart) {
        this.chart.setOption({
          title: {
            left: 'center',
            text: title || ''
          },
          xAxis: {
            data: [...xAxisDatas || []],
            boundaryGap: false,
            axisTick: {
              show: false
            }
          },
          grid: {
            left: 10,
            right: 10,
            bottom: 20,
            top: 30,
            containLabel: true
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross'
            },
            padding: [5, 10]
          },
          yAxis: {
            axisTick: {
              show: false
            }
          },
          legend: {
            left: 'right',
            data: ['单据总金额', '单据总数量']
          },
          series: [{
            name: '单据总金额', itemStyle: {
              normal: {
                color: '#FF005A',
                lineStyle: {
                  color: '#FF005A',
                  width: 2
                }
              }
            },
            smooth: true,
            type: 'line',
            data: totalAmountDatas,
            animationDuration: 2800,
            animationEasing: 'cubicInOut'
          },
          {
            name: '单据总数量',
            smooth: true,
            type: 'line',
            itemStyle: {
              normal: {
                color: '#3888fa',
                lineStyle: {
                  color: '#3888fa',
                  width: 2
                },
                areaStyle: {
                  color: '#f3f8ff'
                }
              }
            },
            data: totalNumDatas,
            animationDuration: 2800,
            animationEasing: 'quadraticOut'
          }]
        })
      }
    }
  }
}
</script>
